Self is hetro across time (diachronic?): old self, current self, future self.
Self is hetro in time (synchronic?): hetro components compose the self.
Both forms of hetro entail competition and cooperation.
I am an ironist (see http://ironick.typepad.com/Ironist.html) and general systems theorist (talk about a duality), a member of my loving immediate family along with my wife and three children, and an analyst for a major IT "Research and Advisory" firm.